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2 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
2 x SC207, Specialty Filter Refillable Color Changing DI Filter for
2 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x *Discontinued* RO155C
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
3 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
2 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
2 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x bulk213, Inline Carbon Filter
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Special Filter Kit Koolermax dealer distribution kit
1 x 316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
2 x 752, DC Booster Pump w/ Transformer
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x bulk201, Sediment Filter
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x WS-150M, Whole House Water Softener
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x *Discontinued* RD150
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 756SET, Aquatec Permeate Pump Reverse Osmosis System ERP1000
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 202,1 MICRON Sediment filter (replace every 6-12 month) SED1001

View Cart$7,025.45
Specials Log InCreate Account Checkout  Shopping Cart87 item(s)
2 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
2 x SC207, Specialty Filter Refillable Color Changing DI Filter for
2 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x *Discontinued* RO155C
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
3 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
2 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
2 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x bulk213, Inline Carbon Filter
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Special Filter Kit Koolermax dealer distribution kit
1 x 316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
2 x 752, DC Booster Pump w/ Transformer
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x bulk201, Sediment Filter
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x WS-150M, Whole House Water Softener
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x *Discontinued* RD150
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 756SET, Aquatec Permeate Pump Reverse Osmosis System ERP1000
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 202,1 MICRON Sediment filter (replace every 6-12 month) SED1001

View Cart$7,025.45

ATU TEE Union Connector Quick Connect QC Fitting [ATU]

$3.50

ATU TEE Union Connector Quick Connect QC Fitting



* ATU TEE Union Connector, Quick Connect

* Please choose size from the selection box below. Both numbers are tubing OD Outside Diameter. First number is Tee double side and second number is the single side. (Pipe sizes can be confusing even for the experienced user. Pipe size is not the actual outside or inside diameter of the pipe but is the industry accepted designation. If you have any question please email us first.)
* 1/4" Tube OD x 1/4" Tube OD ATU0404
* 3/8" Tube OD x 1/4" Tube OD ATU0604
* 3/8" Tube OD x 3/8" Tube OD ATU0606
* 1/2" Tube OD x 3/8" Tube OD ATU0706
* 1/2" Tube OD x 1/2" Tube OD ATU0707


* Water & foods use: Products are manufactured from safe, non-toxic materials meeting the requirements of the US FDA, ERAS, ANSI/NSF-51,61, and SK Zert. Our products are widely used in water purification, food/beverage, and pneumatic systems.

* Function & Quality: Provides quick and convenient assembly-saving time & expense.

* Collet Design: Our unique oval collet design is superior and more practical, and is an improvement welcomed by our world wide customers in all industries.

* Additional Applications: Beyond water and food use, fittings can be used with air, gases, vacuum, & liquids. All connections can be assembled & disassembled repeatedly. A broad range of sizes covers a broad scope of applications.

* We carry different fittings in variation of sizes: 1/4", 3/8", or 1/2" adapters, connectors, fittings, or valves.  Most are not listed online, to avoid confusion to majority of RO system customers.  

* Send us a message with specification, intended application, and image of your setup or old fitting  to check if we have what you need. 

Available Options:

Size Combination:

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